This is the third attempt at introducing keyword aware methods in GOOPS.

What is new in v3 is that keyword arguments and default parameters to
keyword arguments are handled correctly when using (next-method). Now only
those keyword arguments actually present in a call get forwarded to the
next-method.

I've also committed these changes to

https://github.com/mdjurfeldt/guile/tree/goops-keyword

Best regards,
Mikael